Even if you find all those multiple number of volunteers, you still need additional vaccine doses to be manufactured, which can take longer because they need mo

Even if you find all those multiple number of volunteers, you still need additional vaccine doses to be manufactured, which can take longer because they need more supplies from third parties, and scale up early. Not to mention all the extra staff to run the trials. If somehow they're able to run trials on 12x the volunteers, I would rather that they increase the participants by 12x for the final dose so that you get more confidence in the Phase 3 study results and in finding rare side effects.